Safety-razor.



H. OSTROVSKY'.

SAFETY RAZOR,

APPLICATION FILED JAN.2B. 19H! LQQBQQ. Patented Oct. 8, 1918.

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'a stud n'engaging in a hole I handle or stem 0 in order to lock the two ."lsmnmz OSTROVSKY, or BAYSWATER, LONDON, ENGLAND.

SAFETY-RAZOR.

Specification of Letters Patent.

Patented Oct. 8, 1918.

Application filed .T anuary. 26, 1918. Serial No. 213,886.

To all whom it may concern:

Be it known that I, HARRY OSTROVSKY, of Russian nationality, residing at 50 Leinster Gardens, Bayswater, London, England, have invented new and useful Improvements in" Safety-Razors, specification.

My invention relates to safety razors with two-edged blades, and it consists essentially in the provision of means for facilitating, and affording effecting, the stropplng of the blades.

In the accompanying drawing- Figure 1 is a side elevation of a safety razorv constructed according to my invention, the blade being in position for shaving.

Figs. 2 and 3 are end elevations.

Fig. 4 is a central longitudinal vertical section; and

Fig. 5 is a central tion of thesame.

Fig. 6 is a perspective view of the apparatus without the blade and the guards and of which the following is a transverse vertical sec- .lather receptacles.

Fig. 7 is a similar view showing the blade and its clamps or holders detached.

Fig. 8 is a detached perspective view of the guards and lather receptacles.

Fig. 9 is a central transverse vertical section of the safety razor with the blade in one of the stropping positions.

Figs. 10 and 11 are transverse sections illustrating the two other stropping posi tions of the blade.

Fig. 12 is a pers ective view native form .of bla e.

In carrying out my invention the blade, which may be an ordinary wafer. blade at, is rotatably held by a pair of spring arms 6, I) carried by the handle or stem 0' of the apparatus, and is clamped in suitable holders d, d provided with pivots e, e which are inserted in holes f, f at the top of the arms 12.

The guards and the receptacles for the lather constitute an oblong case open at the top it and at one endi, so that the handle or stem 0 provided with the arms 6 can be of an alterinserted and removed through the said open end, the bottom of the case 9 being slotted at 7' to allow of the passage of the handle or stem which is formed with upper and lower guide grooves 70 and Z in either of which slide the edges of the slotj; m is a sprlng tongue on the bottom of the case 9 having 0 or 0 in the four different ways for arm and is formed with a cut or parts of the guard-teeth p are arranged on the top edge of each side of the oblong case, and the lather collectors consist of ledgcsq at the lower part of the case parallel with the rows of guard-teeth and designed to prevent lather from running down the handle of the apparatus.

Theblade is held in either of its proper apparatus together. The.

angular positions with relation to the guard,

for shaving and also in proper horizontal stropping position, by means of catches or detents r, 1 and in proper vertical stropping position by means of a catch or detent s, all designed to be operated by the hand against the action of a spring t as follows i The catches or detents r and s are carried by a plate a mounted on a square spindle 1) arranged to slide and turn in thespring arms 6,6 so that when the said spindle is pushed by means of its knob to against the action of the spring t the detents clear of 1n the horizontal Fig. 10; or the detents may be held out of action to permit certain parts to limit the rocking movement of the blade when stropping in the manner hereinafter explained with reference to Fig. 11. Or the detent 8 which passes through a hole in the spring groove as shown, can be caused to hold the blade in the vertical stropping position as in Fig. 9. When it is required to strop the blade the oblong case 9 may be removed from the handle 0 carrying the arms 6 and blade a, and the two edges of cessively, and the stropping can be effected either with the blade turned into the vertical position or into the horizontal position.

It is of advantage, however, when stropping With the blade in the vertical position, to apply the oblong case 9 to the handle or stem 1n the lower position as shown in Fig. 9, that is to say, with the edges of the slot in the guide grooves Z instead of in the guide grooves is, because theguard-teeth ;0 will then be found to give the proper stropping angle as represented by the dotted line y which indicates the strop.

the plate u will be .moved away from. one of the spring arms 6 the latter stropped sucf Fig. 10 shows the blade in the horizontal stropping position.

To enable the blade to be effectively stropped' by the most inexperienced person rollers 00, w are provided between which and the blade at the strop 'I is introduced as shown in Fig. 11 and held taut with one hand while the razor is moved to and fro with the other hand.

The rollers m are mounted in the arms 6 in such a manner that they can when required be readily brought into and secured in, the proper stropping proximity to the blade and withdrawn therefrom when the stropping has been completed.

To this end the rollers 01 are advantageously pivoted eccentrically as shown within the spring arms I) by mounting them in a three-sided frame 3 arranged to turn with the spindle t which can also slide therein so that by th-us turning the frame the rollers are caused to approach or recede from the blade. To this end the spindle 'v is made square at, parts co-acting with the frame 3 but is-of circular section where it engages the arms I). The rollers :11 are locked in their raised position, shown in Fig. 11, by means of the catch or detent s and in their lowered position by means of the catch or detent 2 on the plate 11, both the said catches or detents passing through holes in one of the a spring arms I) and engaging in a. cavity or depression in one end of the frame y.

The extent to which the blade can alternately rock in order to give it the proper stropping angle, is limited by the ends of the frame y, the catches or detents 1', r being meanwhile held out of contact with the blade by reason of the catch or detent s being arrested on its return passage through a hole in the spring arm I) by the bottom of the cavity or depression in the end of the frame y.

When it is desired to strop the blade, as illustrated in Fig. 11, the handle of the razor is moved down the strop y and this causes the upper edge of the blade to engage the strop. As the blade moves down, the friction exerted on the curved surface of the lower holder d will have a tendency to, bring the lower-edge of the blade into contact with the strop, but this is prevented by the curved surface of the lower holder (1 engaging the left hand upper ed e of the frame y. As the razor moves own the strop, the left hand roller 00 will engage the under surface of the strop but when the razor is moved up the strop, the right hand roller 00 will be brought into engagement with the strop and the blade will be rocked, so that its lower edge will be brought into contact with the strop and the upper portion of the curved surface of the lower holder (l will be brought into engagement with the right hand upper edge of the frame tastiest piece resembling two hollow ground razors Z placed back to back, as shown in Fig. 12.

Claims:

1. In a safety razor with a two-edged blade, a blade holder mounted upon a handle, a case adapted to removably receive the said holder and handle, guard-teeth upon the top edge of each side of the case and ledges at the lower part of the case parallel with the rows of guard-teeth and designed to receive the latherand prevent it from running down the handle.

'2. In a safety razor with a two-edged blade, the combination of a case having two rows of guard teeth and lather collecting ledges, of a pair of spring arms, and a holder for the blade provided with means cooperating with said arms for pivotally' supporting said blade.

3. In a safety razor with a two-edged blade, a case having two rowsof guard-teeth and lather collecting ledges, a. pair of arms pivotally holding the blade and mounted on a stem or handle, a slot in the bottom of the said case, a groove in the said stem to receive the edges of the slot, a recess or hole in the said stem above the groove, and a spring tongue on the bottom of the case engaging the said recess or hole.

4. In a safety razor with a two-edged blade, a case having two rows of guardteeth and lather collecting ledges, a pair of arms pivotally holding the blade and mounted on a stem or handle, a slot in the bottom of the said case, upper and lower grooves in the said stem, both of which are designed to receive the ed es of the slot, a shoulder in the said stem a ove each groove,

and a spring tongue on the bottom of the arranged toslide and turn in the said arms,

catches or detents on the said plate adapted to engage the blade, and an actuating knob I and a spring. on the said spindle.

6. In a safety razor with a two-edged blade pivotally supported within a pair of arms, means for holding the blade in a proper vertical stropping position comprising a plate mounted on a spindle arranged to slide a catch or detent a cut or groove and turn in the said arms, on the said plate having adapted to engage and hold the blade, a hole in one of the said arms for the passage therethrou h of the catch or detent and an actuating nob and a spring on the said spindle.

7 In a safety razor with a two-edged blade pivotally supported within a pair of arms, rollers mounted in the said arms in such a manner that they can be readily brought into, and secured in, proper stropping proximity to the blade, and withdrawn therefrom when the stropping has been completed.

8. In a safety razor with a two-edged blade pivotally supported within a pair of arms, rollers mounted in a threesided frame arranged to turn with a spindle rotatably supported in the said arms, the said rollers being eccentrically disposed with relation to the said spindle which is also capable of slidin in the said frame.

9. n a safety razor with a'two-edged blade pivotally supported within a pair of arms, a three-sided frame mounted below the blade in the said arms on a spindle arranged to turn with thesaid frame and also slide therein, rollers carried by the said frame and eccentrically disposed with relation to the said spindle, a plate mounted on the said spindle which is also arranged to slide and turn in the said arms, catches on the plate, holes in the said arms for the passage therethrough of the catches, a cavity in one end of the said frame for the reception of the catches, and an actuating knob and a spring on the said spindle.

10. A safety-razor comprising a holder provided with parallel arms, a double edged blade pivotally supported by said arms, guard teeth carried by said holder, two catches for holding said blade in either of two proper angular positions for shaving, and also in proper horizontal position for stroppin and another catch for holding said blarfe in vertical position for stropping.

HARRY OSTROVSKY. 

